Articles | Volume 16, issue 5
Atmos. Chem. Phys., 16, 3099–3126, 2016
Atmos. Chem. Phys., 16, 3099–3126, 2016
Research article
09 Mar 2016
Research article | 09 Mar 2016

Atmospheric methane evolution the last 40 years

Stig B. Dalsøren et al.

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Short summary
Methane is a key greenhouse gas. Observations at surface sites show a more than 10 % increase over the period 1984–2012. Using an atmospheric model we calculate a growth in the atmospheric chemical methane loss the last decades. Without this, the rise in atmospheric methane would have been even higher. The model reproduces trends and short-term variations in observation data. However, some discrepancies in model performance question the accuracy in estimates of emission increases in Asia.
Final-revised paper